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7587223 |
Terminal for mobile phone and method for controlling the synchronism of terminal for mobile phone
In a mobile phone terminal, in which a sound, such as the audio, may be synchronized with a moving picture even in case a sound processor unit processing the sound, such as audio, is controlled by...
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7583809 |
Sound signal processing device and sound signal processing method
In a sound signal processing device, the level of an output signal is controlled as a function of the level of the corresponding input signal by supplying the output signal, whose level is...
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7583806 |
Convertible automobile sound system equalizing
A convertible automobile sound system is responsive to the state of the convertible automobile top for providing equalization to speakers related to the state of the convertible top.
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7577263 |
System for audio signal processing
A sound reproduction system comprising a digital audio signal input ( 1 ), a digital audio signal processor ( 2 , DSP) and a digital audio signal output ( 3 ) wherein the digital signal processor (...
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7564899 |
Multistage tuning-tolerant equalizer filter
A multistage equalizer filter for compensating a received distorted signal having an amplitude for frequency dependent signal modifications introduced by a transmission channel includes at least...
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7561935 |
Integrated multimedia signal processing system using centralized processing of signals
Integrated processing of multimedia signals can eliminate unnecessary signal processors and converters without losing the functionality of typical home entertainment system components. The...
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7561619 |
Feedback filter
Disclosed are a system, method and device for generating an equalized signal from an input signal. Symbols in the equalized signal may be detected on each of a sequence of symbol intervals to...
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7558390 |
Listening device
A method for equalizing output signals from a plurality of signal paths is disclosed. The method comprises steps of identifying a transfer function for each of signal paths, determining a filtering...
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7545859 |
Adaptive channel equalization technique and method for wideband passive digital receivers
An adaptive channel equalization technique and method for wideband passive receivers is disclosed that reduces and tends to minimize distortions caused by circuitry within passive digital...
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7542815 |
Extraction of left/center/right information from two-channel stereo sources
A digital audio signal processing system and method transforms two-channel stereo time-domain data into the frequency domain. Vector operations are performed upon the frequency-domain data by which...
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7529377 |
Loudspeaker with automatic calibration and room equalization
A loudspeaker, such as a subwoofer, is provided which automatically calibrates itself when placed in a room to optimize an output signal of the loudspeaker for the room in which the loudspeaker is...
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7519189 |
Processing of an audio signal for presentation in a high noise environment
In accordance with the invention, audio signals are specially processed for sound presentation in a high noise environment. The electrical signal representative of the sound is first subjected to...
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7492817 |
Adaptive digital filter
An adaptive digital filter includes a filtering circuit and a coefficient renewal circuit. The filtering circuit has a coefficient a defined by a fundamental formula:...
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7489784 |
Automatic sound field correcting device and computer program therefor
An automatic sound field correcting device executes a signal process to the plurality of audio signals on respective correspondent signal transmission paths, and outputs them to a plurality of...
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7483540 |
Automatic audio system equalizing
An automated process for equalizing an audio system and an apparatus for implementing the process. An audio system includes a microphone unit, for receiving the sound waves radiated from a...
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7474755 |
Automatic microphone equalization in a directional microphone system with at least three microphones
Microphone equalization is implemented in a directional microphone system of the second or a higher order with at least three omnidirectional microphones. Initially, the signal levels of the...
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7469003 |
Method and apparatus for adaptive channel equalization using decision feedback
The equalizer circuit ( 200 ) equalizes the channel prior to despreading thereby restoring the orthogonality of signals that typically exists in the forward link of CDMA systems and thus...
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7466831 |
Audio processing
The present invention relates to audio signal processing such as equalisation and spatial enhancement functions. The present invention provides an audio signal processing circuit arrangement for...
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7466829 |
Dynamic bass equalization with modified sallen-key high pass filter
A dynamic bass equalization circuit has an amplitude dependent gain that is dependent upon the audio electrical signal amplitude and a dynamically adjusted frequency response that varies with the...
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7463746 |
Narrow opening electroacoustical transducing
A loudspeaker system having an enclosure having a narrow opening or slot for radiating high frequency acoustic energy. The loudspeaker system has a cover member defining a slot between the cover...
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7460678 |
Digital audio processor
The present invention is related to a method for adjusting the frequency characteristic of a digital audio processor having adjustable parameters including at least low frequency gain, high...
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7457421 |
Circuit and program for processing multichannel audio signals and apparatus for reproducing same
A circuit for processing multichannel audio signals, comprises a frequency characteristics correction device and an output device. The frequency characteristics correction device corrects frequency...
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7453932 |
Test device and setting method
A testing apparatus for testing a device under test is provided, wherein the testing apparatus includes: a comparator for receiving a signal output from the device under test and converting the...
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7443913 |
High speed decision feedback equalizer
An equalizer comprises a sampler, a filter, and a summer. The sampler samples a signal indicative of an input communication signal to determine digital decision output signals having a...
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7428308 |
Transmitting and reproducing stereophonic audio signals
Apparatus and method for transmitting and reproducing stereophonic audio signals are disclosed. The method comprises splitting first and second channels into two frequency bands, combining the...
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7409067 |
Method and apparatus for adjusting frequency characteristic of signal
In a frequency characteristic adjustment apparatus incorporated in an audio system, a frequency characteristic of an audio signal is made to agree with a target frequency characteristic, thus...
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7409066 |
Method of adjusting filter parameters and an associated playback system
To improve upon a method of adjusting at least one filter parameter such as the mid-frequency of at least one filter unit provided with a playback system for audio signals, this filter unit being...
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7403626 |
Level adjustment apparatus
Arrangements are made such that a plurality of operators, such as faders, can be set to opposite operational directions. When any one of the operators has been operated in a particular direction, a...
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7390960 |
Electronic signal processor
An electronic signal processor for processing signals includes a complex first filter, one or more gain stages and a second filter. The first filter is characterized by a frequency response curve...
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7388959 |
Harmonic generator and pre-amp
A Harmonic Generator for audio applications and a Pre-Amplifier circuit are combined to form a Harmonic Generator and Pre-Amplifier circuit. The Harmonic Generator is formed from a Buffer Circuit...
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7363096 |
Digital audio signal filtering mechanism and method
Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio...
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7352872 |
Filter circuit and method for processing an audio signal
The invention relates to a filter circuit for processing an audio signal, comprising a first branch in which the audio signal is guided in an essentially unchanged state to an output summation...
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7346326 |
Mobile communication terminal with equalizer function
Disclosed is a mobile communication terminal which is provided with an equalizer function of audio equipment to adjust a timbre of transmitting/received speech sounds so as to satisfy a great...
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7340069 |
System and method for split automatic gain control
A system and method for automatically controlling gain in a signal chain are presented. A first signal is processed to produce a processed signal. A gain is adjustably applied to the processed...
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7336793 |
Loudspeaker system for virtual sound synthesis
A sound system obtains a desired sound field from an array of sound sources arranged on a panel. The desired sound field allows a listener to perceive the sound as if the sound were coming from a...
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7333863 |
Recording and playback control system
The invention is a system for recording and reading both program data and acoustical control data and playing back the data to optimize performance of audio reproduction and recreate the effect of...
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7302062 |
Audio enhancement system
An audio enhancement system for compensating for ambient noise in a listening environment, comprises an audio system that produces an electrical sound signal and generates a sound output from the...
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7289637 |
Method for automatically adjusting the filter parameters of a digital equalizer and reproduction device for audio signals for implementing such a method
A method is proposed for automatically adjusting the filter parameters—center frequency, quality and amplification or attenuation—of at least one digital equalizer which is a component of a...
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7277550 |
Enhancing audio signals by nonlinear spectral operations
A system and method are disclosed for enhancing audio signals by nonlinear spectral operations. Successive portions of the audio signal are processed using a subband filter bank. A nonlinear...
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7274795 |
System for and method of audio signal processing for presentation in a high-noise environment
The present invention relates to novel systems, methods, and circuits useful for achieving quality sound presentation in high-noise environments. Specifically, the present invention provides...
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7266205 |
Linearized filter band equipment and processes
A method for use with equipment having filters, the method characterized by multiplying a matrix having a specified cut-boost setting of a filter of a graphic equalizer by a correction matrix to...
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7215787 |
Digital audio precompensation
The invention concerns digital audio precompensation, and particularly the design of digital precompensation filters. The invention proposes an audio precompensation filter design scheme that uses...
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7215784 |
Programmable audio system for automotive vehicles
A system and method is disclosed for improving the audible output of a vehicle radio based upon the particular type of vehicle in which the radio is installed. A vehicle radio includes a data...
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7194096 |
Method and apparatus for adaptively pre-shaping audio signal to accommodate loudspeaker characteristics
An input audio signal is analyzed to determine a power spectral density profile and the power spectral density profile is compared with at least one template profile. On the basis of the...
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7181021 |
Apparatus for acoustically improving an environment
The invention provides an apparatus and related method for acoustically improving an environment. In an embodiment of the present invention, an electronic sound screening system includes a portion...
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7177432 |
Sound processing system with degraded signal optimization
A sound processing system adaptively mixes active matrix decoding and passive matrix processing of incoming audio signals. Mixed output signals are generated with active matrix decoding where the...
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7171009 |
Method of correcting sound field in an audio system
In correcting the sound field, the loudspeakers 6 FL to 6 WF are sounded by the noise. The attenuation factors of the inter-band attenuators ATF 11 to ATF ki for adjusting gains of the...
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7171005 |
P.A. system installation method
The invention concerns a method for transmitting in an area ( 100 ) information items in the form of sound waves representing a signal X(t), through a loudspeaker enclosure ( 2 ), said method...
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7167515 |
Method and system for equalization of a replacement load
A system ( 10 ) and method ( 50 ) of equalizing an audio signal from a factory installed radio ( 30 ) using an interface unit ( 10 ) between the factory installed radio and a replacement load ( 34...
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7123731 |
System and method for optimization of three-dimensional audio
The invention provides a system for optimization of three-dimensional audio listening having a media player and a multiplicity of speakers disposed within a listening space, the system including a...
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